Lock for opening surfaces in general



Sept. 1, 1959 R. c. ROMEGIALLI LOOK FOR OPENING SURFACES IN GENERAL 2 Sheets-Sheet 1 Filed June 14, 1956 5 601 62/- film/-06 a nsa/ 0 Sept. 1, 1959 R. c. ROMEGIALLI 2,902,306

. LOCK FOR OPENING SURFACES IN GENERAL Filed June 14, 1956 2 Sheets-Sheet 2 Unite The present invention is concerned with a lock for opening surfaces in general, said lock being of the tubular type, based upon a housing of tubular shape having inclosed therein the locking mechanism; one of the components of said locking mechanism, formed by a symmetrically actuated bolt, being the safety means for the correct operation of the remaining component parts integrating the locking mechanism.

By reason of the direct correlation between the different elements forming the locking mechanism, the latter is distinguished by the characteristic features to be set forth hereinafter.

The lock is readily installed in the sash of the opening surfaces, by simply drilling into said sash two cylindrical holes, for the purpose of later on securing the lock into position by means of retaining members provided in the housing carrying the bolt, into said sash.

, The actuation of the bolt is effected by means of a slight pressure exerted on either of two push buttons engaged to the lock handles.

The locking action of the bolt may be indifferently effected from within or from without by means of one quarter turn of the handle or one half turn of a combination key, the insertion of a key from the outside being no hindrance to the operation from the inside of the sash.

Unlocking of the bolt is obtained from either side by a simple turn of the key or handle in opposite direction to that of the locking turn.

The simplified construction of the device, devoid of screws and the contingent risk of loosening thereof, and including helical adjusted springs, impart to this lock the character of a unit endowed with long duration in working condition, even for the cases in which the lock should be exposed to rough handling.

To the purposes set forth hereinbefore, the invention provides a lock of tubular construction, in the shape of a housing formed by a pair of cylindrical tubes inserted one within another and capable of rotation with regard to each other within relative limits. Said tubes of cylindrical shape being provided each with one hollow handle knob projecting from opposite faces of the sash forming the opening surface. Said handle knobs carry each one push button said push buttons being in engagement with actuating means for the bolt, this latter being on its part housed in a tubular housing transversely fitted with regard to the locking mechanism arranged within the main housing. The bolt-carrying housing is inserted through openings formed in the cylindrical tubes and secured by rigid connection to the outside, being capable of rotary move-' ment in the interior of the housing. The bolt is engaged to locking means therefor in a pre-established position being capable of becoming released in another position; both these positions are being determined by stop mem bers arranged in the inner tubular housing, apt for lodging themselves alternatingly in either one of the holes of a pair of holes formed in the outer tube.

The assemblyforming the lock in question will be described hereinafter in connection with the accompanying States Patent lee drawings disclosing a practical embodiment of the invention. In said drawings:

Figure 1 shows the lock according to the invention in a sectional view along a vertical plane.

Figure 2 is a section of the lock along the plane 1-1 of Figure 1.

Figure 3 is a sectional view of the lock along a plane II-II of Figure 1.

Figure 4 shows the locking mechanism in locking position.

Figure 5 is a perspective view of the cylindrical tubes integrating the locking mechanism in position for mutual connection with each other.

Figure 6 is a fragmentary detail of the lock in transverse section, the housing of the bolt having been omitted.

Figure 7 is another sectional detail showing the bolt impelling mechanism.

As shown in the drawings, the lock according to the invention comprises the following relationship of the constituting parts therof; a housing 1 is provided, wherein a locking bolt 2 is provided, said housing being of tubular shape, and provided with two diametrically opposite slots containing the wings 3, 3', pivoted on the transverse bolt 4 arranged within said housing 1. Said Wings pass through the body of the locking bolt 2 through respective grooves formed therein, said locking bolt including a pin 5 arranged beyond the end of the grooves. The said pin has mounted thereon a roller 6 contacted by the wings 3, 3, with their contiguous border in such manner that when pressure is exerted by said wings against the pin of the bolt, they will give rise to a linear displacement of the latter against the tension of a spring 7, tending to keep the bolt in projecting position with regard to the housing 1, whereby said wings will pull the locking bolt back into said housing 1.

The housing for the locking mechanism is formed by a pair of cylindrical tubes 8 and 9, each being provided at one end with one handle knob 10, 11, respectively, said knobs being hollow, having at the ends thereof the push-- buttons 12, 13, respectively. Said push buttons are provided with their inner ends,, penetrating into the tubes 8, 9, with discs 14, 15, respectively, apt to cause the displacement of the wings 3, 3' when the push buttons 12, 13 are depressed by exertion of an inward pressure, e.g.

, with the aid of the fingers, in the direction of the arrows into their projecting positions, when the buttons are not depressed to push the wings 3, 3' into operative position.

The housing 1 shows at the free end thereof a notch 17, and in a plane situated directly backwardly thereof, a pair of longitudinal slots 18, bifurcated in a transverse branch 13' to the purpose which will be described further on.

The cylindrical tubes 8 and 9 show the following structural details: The one cited in the first place is provided with a lateral hole 19, see Figure 5, having two Zones, one of larger cross section than the other, and a second hole 24 in transverse position, diametrically opposite the hole 19. The free border of the tube 8 has a tongue 21 along the direction of the generatrix of the tube, said tongue extending in a zone of the end of the tube provided with a step 22, the end of the tongue 21 being formed with an internal rim 23.

The cylindrical tube 9, being of slightly larger diameter than the tube 8 which is lodged therein has two diametri cally opposite holes 24 and 25, a radial projection 24' being providedat the border at the hole 24, shown in Figure 5. These holes have the same diameter asthe external diameter of the housing 1 carrying the bolt 2.

The arrangement described with regard to the tubes 8 and 9 results in the fact that upon inserting the first into the second, the hole 20 will register with hole 25, andthe hole 19' will at its larger zone register with the hole 24, this position being established by a stop 26, integral with the free end of a leaf spring 27, said stop being apt to lodge into an opening 28 formed in the tube 9. In this relative position of both tubes, the housing carrying the locking bolt and traversing the holes 19, 20,. 24 and 25, will become guided and retrained by the projection 24 on the entrance of the latter in the notch 17, the assembly having the shape of Figure 1.

The second hole 29, as shown in Figure 5, permits of a second position of the tube 8- wi-th regard to the tube 9, for which purpose the projections 19' and 19 Willhave been inserted in the transverse portions 18, as shown in Figure 4, to lock the retractile movement of bolt 1. In this case, in order to pass from the first position to the last mentioned position, it will be sufficient to rotate the handle knob or 11, the latter by means of its key, a quarter turn, to free the stop 26 of hole 28 against the tension of the leaf spring 27, and to lodge it in the hole 29. Furthermore, in the first position, the tooth of the disc 15 will be able to enter the slot 21, when pressure is exerted upon the push button 13, whereas in the second position the rim 23 will establish contact with the tooth 15 and thereby lock the push button 13, which on being carried to the outwardly projecting position, will prevent actaution of the lock from said position, even rendering useless the key which will only serve to lock the push button 13, thereby preventing that when the cylindrical tubes 8 and 9 fail to meet in the locked position of the bolt, the latter may be operated by turning the knob 13.

The structural features of the lock forming the subject matter of the present invention are hereby clearly disclosed, but it is to be understood that further details maybe changed without departing from the limits and scope of the invention as established in the appended claims.

Having now particularly ascertained and described the nature of the said invention and the manner in which the same is to be carried into practice, it is hereby declared that what is to be covered by Letters Patent is:

I claim:

1. Lock mechanism comprising, in combination, a housing formed by a pair of tube members inserted telescopically into one another and capable of rotation one relative to the other within predetermined limits, each said tube member comprising at its outer end a handle portion, the inner tube member being turnable between limit positions relative to the outer tube member which is stationary for respectively blocking and unblocking the lock mechanism; a push button member arranged in each handle slidable therein between an outer and an inner limit position coaxially with said telescoping tube members, each said push button member having spring means associated therewith tending upon depression of said push button members to return the same to their outer limit position; a tubular latch bolt housing extending transversely through said telescoping tube members and having a latch bolt member axially movable therein between extended and retracted position and normally spring urged into extended position, said latch bolt housing being fixed relative to the outer tube member, the inner tube member eiiective upon turning to one limit position to block the retraction of said latch bolt member in its housing and upon turning to the other limit position efiective to unblock said latch bolt member; actuating means engaged by said push button members and engaging the latch bolt member in such amanner that depression of either of said push button members 4 will retract the latch bolt member into the latch bolt housing while release of either of said push button members will allow the latch bolt member to extend from said housing.

2. Lock mechanism comprising, in combination, a housing formed by a pair of tube members inserted telescopically into one another and capable of rotation one relative to the other Within predetermined limits, each said tube member comprising at its outer end a handle portion, the inner tube member being turnable between limit positions relative to the surrounding tube member which is stationary for respectively blocking and unblocking the lock mechanism; a push button member arranged in each handle slidable therein between an outer and an inner limit position coaxially with said telescoping tube members, each said push button member having spring means associated therewith tending upon depression of said push button members to return the same to their outer limit position; a tubular latch bolt housing extending transversely through said telescoping tube members and having a latch bolt member axially movable therein between extended and retracted position and normally spring-urged into extended position, said latch bolt housing being fixed relative to the outer tube. member, the inner tube member effective upon turning to one limit position to block the retraction of said latch bolt member in said latch bolt housing and upon turning to the, other limit position effective to unblock said latch bolt member; actuating means engaged by said push button. members and engaging the latch bolt member in such a manner that depression of either of said push button members will retract the latch bolt member into the latch bolt housing while release of either of said push button members will allow the latch bolt member to extend from said housing, said actuating means comprising a pair of swingable cammembers having common pivotal connection with said latch bolt housing,v and a cam roller cooperative with both said swingable cam members, carried by said latch bolt member spaced axially from said pivotal connection towards the rear end of the housing, the associated push button members by depression thereof adapted to move respective cam members relative to said can-r roller in a manner to effect retraction of the latch bolt member.

3. Lock mechanism, comprising, in combination, a housing formed by a pair of tube members inserted telescopically into one another and turnable one within the other between limit positions, each said tube member comprising at its outer end a handle portion, the inner tube member being turnabl'e between limit positions relative to the surrounding tube member which is stationary for respectively blocking and unblocking the lock mechanism; a push button member arranged in each handle slidable therein between an outer and an inner limit position coaxially with said telescoping tube members, each said push button member having spring means associated therewith tending upon depression of said push button members to return the same to their outer limit position; a tubular latch bolt housing extending transversely through said telescoping tube members and having a latch bolt member axially movable therein between extended and retracted position and normally spring-urged into extended position, said latch bolt housing being fixed relative to the outer tube member, the inner tube member effective upon turning to one limit position to block the retraction of said latch bolt member in said latch bolt housing and upon turning to the other limit position effective to unblock said latch bolt member; actuating means engaged by said push button members and engaging the latch bolt member in such a manner that depression of either of said push button members will retract the latch bolt member into the latch bolt housing while release of either of said push button members will allow the latch bolt member to extend from said housing, and means for optionally blocking and unblocking the push button member associated with the outer tube member, comprising a radial outward projection on the inner end of said push button member and a cooperative radial inward projection on the inner end of said inner telescoping tube memher, said push button being turnable about its longitudinal axis in one direction to move said projections into registry With each other so as to efiect blockage of the axial movement of the push button member, and turnable in the opposite direction to move said projections out of registry so as to efleet unblocking of the push button member.

References Cited in the file of this patent UNITED STATES PATENTS 

